Stars between 9.5 and 11 l.y.
Number of stars: 4

ROSS 248 10.2 LIGHT YEARS

MASS
0.25

LUMINOSITY
0.00011

With an age of 20 billion years, this red dwarf 'flare-type' star (spectral type M6) is considered old in terms of the average lifespan of a typical main-sequence star.
A planet may be orbiting Ross 248 of unspecified mass.

EPSILON ERIDANI 10.7 LIGHT YEARS

MASS
0.75

LUMINOSITY
0.30

Epsilon Eridani's orange surface (spectral type K2) is slightly cooler than our Sun. It has three-quarters the Sun's mass, giving out one-third the light, and is about the same age as the Sun.
The indirect method of detecting planets by 'wobbles' in a star's motion has revealed a dark companion - possibly a brown dwarf - of mass between six and ten times that of Jupiter. Orbital period of this dark companion is about 26 years and it lies at a distance of 1,200 million kilometres from the parent star.
Recently, satellites equipped with infra-red detectors have found dust around Epsilon Eridani in support of a planetary system of diameter seven times the Earth's distance from the Sun. Since chances are good for finding planets around this stable orange star, then chances are also good for finding biological life.
As of 7 August 2000, astronomers have officially confirmed the existence of planetary bodies around this star. Only one thing is left to find out now: Is there a planet capable of supporting native alien life? We can only wait and see. (1)

LUYTEN 789-6 10.8 LIGHT YEARS

MASS
0.25

LUMINOSITY
0.00012

An age of 20 billion years makes this red dwarf quite old, and its spectral type of M6 strongly suggests how poor the chances are of finding life native to this star system.

ROSS 128 10.9 LIGHT YEARS

MASS
0.31

LUMINOSITY
0.00033

The age of this red dwarf is the same as our Sun. But its dim red colour (spectral type M5) may not be emitting sufficient light for primitive plants to evolve on some hidden planet. Infra-red detectors have found dust around this star.

NOTES

Or perhaps we already know the answer if scientists study more closely those other areas of possible extraterrestrial activity such as the UFO reports?